.App{
  width: 100%;
  text-align: center;
}

.container{
  width: 600px;
  height: 600px;
  border: 1px solid black;
  margin: auto;
  margin-top: 100px;
  text-align: center;
}
.board-row{
 width: 600px;
 height: 200px;
}
.board-row button{
  vertical-align: top;
  width: 200px;
  height: 200px;
  border: 1px solid black;
  background-color: #fff;
  font-size: 40px;
  font-weight: bold;
}

.square.highlight{
  background-color: rgb(99, 5, 5);
}

.my-button {
  color: #fff;
  background-color: #909399;
  border-color: #909399;
  display: inline-block;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  -webkit-appearance: none;
  text-align: center;
  box-sizing: border-box;
  outline: none;
  margin: 10px;
  transition: .1s;
  font-weight: 500;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  padding: 12px 20px;
  font-size: 14px;
  border-radius: 4px;
}
.my-button:hover{
  color: #fff;
  background: #a6a9ad;
  border-color: #a6a9ad;
}
